UN Multitooth 15° Helical Thread Mill
The UN Multitooth 15° Helical Thread Mill is designed for fast, precise production of 2A/2B and 3A/3B Unified threads. Its 15° helical flute geometry reduces side cutting pressure and improves chip evacuation, resulting in smoother operation and longer tool life. With multiple cutting teeth, this solid carbide tool significantly reduces cycle times while maintaining thread quality and accuracy. For added durability and enhanced performance in high-speed applications, an optional AlTiN+ coating is available. Ideal for threading ferrous and non-ferrous materials, this tool is perfect for high-efficiency machining environments.
| Minimum ID Thread/Pitch | A (Tool Diameter) | B (Length of Cut) | Q (Length) | S (Shank Diameter) | OAL | Flutes | Uncoated Tool # | Uncoated EDP # | AlTiN+ EDP # |
|---|---|---|---|---|---|---|---|---|---|
| 4-40 | 0.079 | 0.185 | 0.011 | 0.2500 | 2.5 | 2 | TMI079-40H | 102901 | 102937 |
| 6-32 | 0.100 | 0.263 | 0.014 | 0.2500 | 2.5 | 3 | TMI100-32H | 102904 | 102940 |
| 8-32 | 0.115 | 0.263 | 0.014 | 0.2500 | 2.5 | 3 | TMI115-32H | 102907 | 102943 |
| 10-24 | 0.120 | 0.351 | 0.019 | 0.2500 | 2.5 | 3 | TMI120-24H | 102910 | 102946 |
| 10-28 | 0.120 | 0.336 | 0.016 | 0.2500 | 2.5 | 3 | TMI120-28H | 102913 | 102949 |
| 10-32 | 0.120 | 0.326 | 0.014 | 0.2500 | 2.5 | 3 | TMI120-32H | 102916 | 102952 |
| 1/4-20 | 0.180 | 0.521 | 0.023 | 0.2500 | 2.5 | 3 | TMI180-20H | 102919 | 102955 |
| 1/4-28 | 0.180 | 0.515 | 0.016 | 0.2500 | 2.5 | 3 | TMI180-28H | 102922 | 102958 |
| 5/16-18 | 0.234 | 0.632 | 0.025 | 0.2500 | 2.5 | 3 | TMI234-18H | 102925 | 102961 |
| 5/16-24 | 0.234 | 0.641 | 0.019 | 0.2500 | 2.5 | 3 | TMI234-24H | 102928 | 102964 |
| 5/16-32 | 0.234 | 0.638 | 0.014 | 0.2500 | 2.5 | 3 | TMI234-32H | 102931 | 102967 |
| 5/16-40 | 0.234 | 0.635 | 0.011 | 0.2500 | 2.5 | 3 | TMI234-40H | 102934 | 102970 |
| 3/8-16 | 0.285 | 0.775 | 0.028 | 0.3125 | 3 | 4 | TMI285-16H | 102973 | 102988 |
| 3/8-20 | 0.285 | 0.770 | 0.023 | 0.3125 | 3 | 4 | TMI285-20H | 102976 | 102991 |
| 3/8-24 | 0.285 | 0.766 | 0.019 | 0.3125 | 3 | 4 | TMI285-24H | 102979 | 102994 |
| 3/8-32 | 0.285 | 0.763 | 0.014 | 0.3125 | 3 | 4 | TMI285-32H | 102982 | 102997 |
| 7/16-14 | 0.305 | 0.886 | 0.032 | 0.3125 | 3 | 4 | TMI305-14H | 102985 | 103000 |
| 7/16-18 | 0.335 | 0.888 | 0.025 | 0.3750 | 3 | 4 | TMI335-18H | 103003 | 103021 |
| 7/16-20 | 0.335 | 0.870 | 0.023 | 0.3750 | 3 | 4 | TMI335-20H | 103006 | 103024 |
| 1/2-13 | 0.350 | 0.877 | 0.035 | 0.3750 | 3 | 4 | TMI350-13H | 103009 | 103027 |
| 9/16-12 | 0.370 | 0.867 | 0.038 | 0.3750 | 3 | 4 | TMI370-12H | 103012 | 103030 |
| 9/16-18 | 0.370 | 0.911 | 0.025 | 0.3750 | 3 | 4 | TMI370-18H | 103015 | 103033 |
| 9/16-32 | 0.370 | 0.888 | 0.014 | 0.3750 | 3 | 4 | TMI370-32H | 103018 | 103036 |
| 5/8-11 | 0.470 | 1.309 | 0.041 | 0.5000 | 4 | 4 | TMI470-11H | 103039 | 103063 |
| 3/4-10 | 0.495 | 1.340 | 0.045 | 0.5000 | 4 | 4 | TMI495-10H | 103042 | 103066 |
| 3/4-12 | 0.495 | 1.283 | 0.038 | 0.5000 | 4 | 4 | TMI495-12H | 103045 | 103069 |
| 3/4-14 | 0.495 | 1.314 | 0.032 | 0.5000 | 4 | 4 | TMI495-14H | 103048 | 103072 |
| 3/4-16 | 0.495 | 1.338 | 0.028 | 0.5000 | 4 | 4 | TMI495-16H | 103051 | 103075 |
| 3/4-18 | 0.495 | 1.300 | 0.025 | 0.5000 | 4 | 4 | TMI495-18H | 103054 | 103078 |
| 3/4-20 | 0.495 | 1.320 | 0.023 | 0.5000 | 4 | 4 | TMI495-20H | 103057 | 103081 |
| 3/4-32 | 0.495 | 1.325 | 0.014 | 0.5000 | 4 | 4 | TMI495-32H | 103060 | 103084 |
| 7/8-9 | 0.620 | 1.489 | 0.049 | 0.6250 | 4 | 5 | TMI620-9H | 103099 | 103114 |
| 1.0-8 | 0.620 | 1.550 | 0.056 | 0.6250 | 4 | 5 | TMI620-8H | 103096 | 103111 |
| 1.0-12 | 0.620 | 1.534 | 0.038 | 0.6250 | 4 | 5 | TMI620-12H | 103087 | 103102 |
| 1.0-14 | 0.620 | 1.529 | 0.032 | 0.6250 | 4 | 5 | TMI620-14H | 103090 | 103105 |
| 1.0-16 | 0.620 | 1.525 | 0.028 | 0.6250 | 4 | 5 | TMI620-16H | 103093 | 103108 |